TPS54680MPWPREP

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The TPS54680MPWPREP is a synchronous buck regulator controller that provides a phase-shift full bridge (PSFB) driver for an externally provided high-side and low-side switch. This datasheet provides information about the features, benefits and applications of TPS54680MPWPREP. It also describes the operating principles and working parameters of the device. The TPS54680MPWPREP is categorized under PMIC (Power Management Integrated Circuits), Voltage Regulator and Special Purpose.

The TPS54680MPWPREP is a low-cost current-mode buck regulator that delivers low-noise, high-efficiency and more accurate regulation. It operates across wide input voltage range from 3.5V to 42V, with a 0.5V to 5.5V adjustable output voltage and enables switching frequencies up to 500 kHz. This makes the TPS54680MPWPREP ideal for numerous high voltage and low power applications. Some of the applications include automotive, battery powered equipment, telecom & communication systems, high-voltage power supplies, industrial instrumentation, and medical equipment.

The TPS54680MPWPREP also features a ramp structure that boosts efficiency, a built-in soft-start and spread spectrum capabilities. While utilizing internal current and voltage sensing, the TPS54680MPWPREP maintains excellent transient response characteristics. The internal oscillator frequency of TPS54680MPWPREP can be trimmed with external resistors for lower-EMI spread spectrum operation.

The TPS54680MPWPREP integrated protection features include the voltage protection, overcurrent protection, thermal shutdown, and under-voltage shutdown. This device also implements overvoltage protection and is capable of supplying up to 1.5A peak load current. It also has a shutdown mode feature that reduces the operating current to less than 1.5µA while maintaining the regulator’s settings.

Working Principle – The TPS54680MPWPREP is designed to achieve high efficiency with low noise. It utilizes a pulse-width modulation (PWM) control architecture and current mode control. It implements a critical mode control with a single cycle of control to measure and regulate even a lightly loaded supply (low load current) accurately. The TPS54680MPWPREP uses an external low-side and high-side MOSFET switch. The output voltage is regulated with a pulse-width modulation (PWM) and a current mode control. The gate driver integrated into the TPS54680MPWPREP optimizes the turn-on and turn-off times of the power MOSFETs, reducing power losses.

In summary, the TPS54680MPWPREP is a low-cost and low-noise synchronous buck regulator controller. It provides a phase-shift full bridge driver for external high-side and low-side switches, and operates across wide input voltage range from 3.5V to 42V with a 0.5V to 5.5V adjustable output voltage suitable for numerous high-voltage and low power applications. The device features a ramp structure that boosts efficiency, a built-in soft-start, spread spectrum capabilities, and integrated protection features. It utilizes an external low-side and high-side MOSFET switch and operates at 0.1mV accuracy which maximizes system performance.

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